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Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms
(AREA)
Abstract
New hardness finger reader, which is characterized by the fact that the device lacks a side opening in its body so that ambient light is introduced, and instead has a radial tube that communicates with the hole axil of the appliance in which the electric battery is located and the lamp with its elastic support, which lamp is not visible in the axial hole, although the luminous rays, by pressing the pushbutton on the free end of the tube or radial handle, they are reflected inside the apparatus thus illuminating the piece or specimen whose hardness trace is to be measured using the micrometer scale engraved for this purpose in one of the bevels of the frame arranged in the lower opening of the apparatus. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the devices intended to facilitate the reading of nonios and calibres (Machine-translation by Google Translate, not legally binding)